@cwebber  might probably be more interested that red/hubzilla's actitivitypub is quite functional and has been for a while now and I've been trying like heck to find some site on Mastodon that isn't blocking me that might let me do some interop testing, but it appears I may be blocked from his and @Gargron 's mastodon (messages are consistently delivered to a black hole responding 'success') and he doesn't seem to read his email - or has blocked me there also.

I'm right fine at being blocked, but there has been a lot of implementation information flowing around and things we've learned which might help the next implementor which might warrant his attention. I don't know if this comment will get through either, but it appears that @paulfree14  isn't blocked so I'll take a gamble on it.